In 49 games this year in AAA, O'Brien is hitting .339 with 15 doubles, 2 triples, 12 home runs and 47 RBI. O'Brien is a big kid at 6'4, 235 lbs and provides a ton of power, as he hit 34 home runs last season in the minors.

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The only thing that will delay his call up is the fact that he's only played a limited amount of games in the outfield. O'Brien came up as a catcher and only recently made the switch to the outfield.